My primary interest lies in the syntax and morphology of Philippine-type languages, and their implications for the diachronic analysis of the Austronesian-type voice system and the cross-linguistic understanding of alignment (and ergativity). I work on three Formosan languages (Puyuma, Amis, Seediq). In my dissertation (ongoing), I focus on Austronesian primary-level subgrouping and the diachronic analysis of the Austronesian-type voice system based on synchronic data from the Formosan languages.